Ginting, Pricella, et al. “Formulation of Anti Acne Sheet Mask from Bandotan Leaf Extract (Ageratum Conyzoides L.) Against Propionibacterium Acnes”. Journal of Drug Delivery and Therapeutics, vol. 11, no. 6-S, Dec. 2021, pp. 123-7, https://doi.org/10.22270/jddt.v11i6-S.5240.